X-Git-Url: http://cloudbase.mooo.com/gitweb/z180-stamp.git/blobdiff_plain/26331e248f87b8d640054c91b581f482cd89bede..fecee2418b6aea15008ed6d3a856d202d59a5cdb:/include/common.h

diff --git a/include/common.h b/include/common.h
index b0dd038..10c4417 100644
--- a/include/common.h
+++ b/include/common.h
@@ -1,3 +1,9 @@
+/*
+ * (C) Copyright 2014 Leo C. <erbl259-lmu@yahoo.de>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
 #ifndef COMMON_H
 #define COMMON_H
 
@@ -46,6 +52,12 @@ struct bits {
 #define FSTR(X) ((const FLASH char[]) { X } )
 #define ARRAY_SIZE(x)	(sizeof(x) / sizeof((x)[0]))
 
+#define MIN(a,b)    ({ typeof (a) _a = (a);                                    \
+						typeof (b) _b = (b);                                   \
+						_a < _b ? _a : _b; })
+#define MAX(a,b)    ({ typeof (a) _a = (a);                                    \
+						typeof (b) _b = (b);                                   \
+						_a > _b ? _a : _b; })
 
 #ifdef __AVR__
 #define Stat GPIOR0
@@ -53,7 +65,7 @@ struct bits {
 extern volatile uint_least8_t Stat;
 #endif /* __AVR__ */
 
-#define S_10MS_TO	(1<<0)
+#define S_10MS_TO		(1<<0)
 #define S_MSG_PENDING	(1<<1)
 #define S_CON_PENDING	(1<<2)